Front-wheel drive (FWD) is a type of engine and transmission layout used in motor vehicles, in which the engine drives the front wheels only. In FWD vehicles, the front wheels are pulling while the rear wheels don’t receive any power. The basic FWD layout provides sharp turning, and better weight distribution creates "positive handling characteristics" due to its low polar inertia and relatively favorable weight distribution. Another result of this design is a lengthened chassis. FWD is inherently fuel-efficient while offering more cost-effective packaging and superior space utilization. A front-drive car doesn’t need a longitudinal transmission, driveshaft, or rear differential, all of which are necessary for the rear-wheel-drive as well as some all-wheel-drive cars. FWD provides better traction on snowy roads, but it can have issues concerning grip and performance, such as torque steer.